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Threshold value of enamel mineral solubility and dental erosion after consuming acidic soft drinks

Dental Journal (Majalah Kedokteran Gigi) Vol 44, No 3 (2011): (September 2011)
Publisher : Faculty of Dental Medicine, Universitas Airlangga

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Abstract

Background: Dental erosion is irreversible and can caused by acidic soft drink consumption. Dental erosion prevention had already been done, but it still has not been satisfying since the consumption of acidic soft drink is still high. There is still no explanation about the threshold value of enamel mineral solubility and the occurance of dental erosion after consuming acidic soft drink. Purpose: This research is aimed to find the threshold value of enamel mineral solubility and dental erosion before and after consuming acidic soft drinks. Methods: Subjects of the research are saliva and enamel of 12 rabbits, which have some criteria such as age > 70 days, body weight > 600 grams, and teeth considered to be healthy. The sample devided equally into 4 groups. Each of those marmooths was given a drink as much as 2.5 cc/consumption (there are 1, 2 and 3× per day) by using syringe without injection needle. Salivary minerals then were examined by using atomic absorption spectrophotometric (ASS), while dental erosion was examined using scanning electron microscop (SEM). The data were analyzed by using Paired t-test. Results: It is known that the threshold value of enamel mineral solubility (K, Na, Fe, Mg, Cl, P, Ca, F, C) has significant difference (p < 0.05) after being exposed to folic acid. Meanwhile, Fe did not have significant difference (p = 0.090) after being exposed to citric acid. Similarly, C did not have significant difference (p = 0.063) after being exposed to bicarbonate acid. Furthermore, it is also known that the threshold time value of dental erosion are on the 105th day for folic acid, on the 111th day for citric acid, and on the 117th day for bicarbonate acid. Conclusion: Threshold value of enamel mineral solubility before and after consuming soft drinks containing acid is different. Based on the threshold value of dental erosion, it is known that folic acid is the most erosive acid.Latar belakang: Erosi gigi bersifat irreversible disebabkan oleh konsumsi minuman ringan yang mengandung asam. Pencegahan erosi gigi telah dilakukan tetapi hasilnya tidak memuaskan karena masih banyak orang selalu mengkonsumsi minuman ringan yang berasam. Tidak ada satupun yang menjelaskan lebih terperinci tentang perbedaan nilai ambang kelarutan email dan waktu erosi gigi setelah konsumsi minuman ringan yang berasam. Tujuan: Penelitian ini dilakukan untuk mengetahui perbedaan nilai ambang kelarutan mineral email dan erosi gigi sebelum dan setelah mengkonsumsi minuman ringan yang mengandung asam. Metode: Subjek dari penelitian ini adalah saliva dan enamel dari 12 ekor kelinci dengan criteria usia lebih dari 70 hari, berat lebih dari 600 gram, dan gigi dalam keadaan sehat. Sampel dibagi menjadi 4 kelompok. Masing-masing kelinci diberikan 2,5 ml minuman sekali konsumsi (1, 2, dan 3 kali sehari) menggunakan spite tanpa jarum. Mineral saliva dianalisa menggunakan Atomic Absorption Spectrophotometric (ASS), sedangkan erosi gigi diperiksa dengan menggunakan Scanning Electron Microscop (SEM). Data analisa dengan Paired-t test. Hasil: Semua mineral email (K, Na, Fe, Mg, Cl, P, Ca, F, C) nilai ambang kelarutannya berbeda secara bermakna sebelum dan setelah terpapar oleh asam folat (p < 0,05). Sebelum dan setelah terpapar oleh asam sitrat nilai ambang kelarutan mineral Fe tidak bermakna (p = 0,090), sebelum dan setelah terpapar oleh asam bikarbonat nilai ambang kelarutan mineral C tidak bermakna (p = 0,063). Nilai ambang waktu erosi gigi didapatkan pada hari ke 105 untuk asam folat, hari ke 111 untuk asam sitrat dan hari ke 117 untuk asam bikarbonat. Kesimpulan: Nilai ambang kelarutan mineral email sebelum dan setelah konsumsi minuman ringan mengandung asam berbeda. Berdasarkan nilai ambang erosi gigi, dapat diketahui bahwa asam folat merupakan asam yang paling erosif.

Pembelajaran Matematika melalui Model Kooperatif Tipe Make a Match dan Tipe Scramble Pada Siswa Kelas VII SMP Negeri 4 Palopo

SAINSMAT Vol 3, No 1 (2014): Maret
Publisher : SAINSMAT

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Abstract

Model pembelajaran kooperatif merupakan model pembelajaran yang menjadikan siswa sebagai pusat pembelajaran. Model ini memiliki beberapa tipe dengan keuntungan masing-masing. Penelitian ini membandingkan keefektifan dua tipe dari model pembelajaran kooperatif yakni tipe Make a Match dan tipe Scramble. Penelitian ini adalah penelitian eksperimen, yang bertujuan untuk (1) mengetahui aktivitas siswa selama pembelajaran kooperatif tipe Make a Match dan tipe Scramble, (2) mengetahui respons siswa terhadap pembelajaran kooperatif tipe Make a Match dan tipe Scramble, (3) mengetahui peningkatan hasil belajar matematika siswa sesudah pembelajaran dengan menggunakan model kooperatif tipe Make a Match dan tipe Scramble, dan (4) mengetahui perbedaan peningkatan hasil belajar matematika antara siswa yang diajar dengan menggunakan model kooperatif tipe Make a Match dan yang diajar dengan menggunakan model kooperatif tipe Scramble.Penelitian ini dilaksanakan pada semester genap tahun ajaran 2011/2012 di Kelas VII SMP Negeri 4 Palopo dengan memilih secara acak dua kelas dari sembilan kelas. Kelas pertama diberikan pembelajaran kooperatif tipe Make a Match dan kelas kedua diberikan pembelajaran kooperatif tipe Scramble. Selanjutnya, keefektifan pembelajaran yang terdiri atas tiga aspek, yakni aktivitas siswa, respons siswa, dan hasil belajar siswa. Pada penelitian ini dilakukan analisis statistika deskriptif dan analisis statistika inferensial. Berdasarkan analisis statistika deskriptif diperoleh kesimpulan bahwa (1) aktivitas siswa selama pembelajaran kooperatif tipe Make a Match dan tipe Scramble berada pada kriteria batasan efektif (2) respons siswa terhadap pembelajaran kooperatif tipe Make a Match dan tipe Scramble berada pada kategori baik (3) hasil belajar siswa sesudah diajar dengan model kooperatif tipe Make a Match mengalami peningkatan. Hal ini terlihat dari hasil belajar setelah diajar mencapai nilai rata-rata 72,39 sedangkan hasil belajar sebelum diajar mencapai nilai rata-rata 19,00 dan hasil belajar siswa sesudah diajar dengan model pembelajaran kooperatif tipe Scramble juga mengalami peningkatan. Hal ini terlihat dari hasil belajar setelah diajar mencapai nilai rata-rata 75,79 sedangkan hasil belajar sebelum diajar mencapai nilai rata-rata 22,00. Berdasarkan analisis statistika inferensial diperoleh kesimpulan bahwa (4) pembelajaran model kooperatif tipe Make a Match dengan pembelajaran model kooperatif tipe Scramble untuk materi segiempat dapat dikatakan sama (tidak ada perbedaan).Kata kunci : Make a Match, Scramble, Keefektifan, Komparasi

Strategies Used by Lecturers in Teaching English Productive Skills at English Study Program of FKIP UIR

JOURNAL OF ENGLISH FOR ACADEMIC Vol 4 No 2 (2017): J-SHMIC(Journal of English for Academic)
Publisher : UIR Press

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Abstract

Teaching English productive skills was considered to become the most difficult lesson, the students needed to have good pronunciation, master structure, discourse and the social context of cultural competence. Besides, speaking and writing  were difficult, more effort was required on the part of the students and lecturers. It was not enough for the students to listen only. This research tried to explore the strategies used by the lecturers and their influences in developing students’ cognitive academic language proficiency by working on students’ English productive  skills. This research was a descriptive qualitative research. It consisted of only one variable, which the researcher wanted to explore the description of strategies used by the lecturers and their influences on students’ English productive skills at English study program of FKIP UIR. In this research, researcher only focused on exploring the strategies used by the lecturers and describing the influences from those strategies on students’ English productive skills. The result of this research showed that there were some strategies used by lecturers in teaching English productive skills at English study program of FKIP UIR, they were: (1) in the speaking classroom; Buzz group, think-pair-share, circle of voices, video recording method. (2) in the Writing classroom; collaborative writing technique. All of those strategies were suitable for teaching speaking or writing and gave description for reader to increase students’ English productive skills.

An Investigation of Thai Students’ English Language Problems and Their Learning Strategies at English Study Program of Teacher Training and Education Faculty of Riau Islamic University

JOURNAL OF ENGLISH FOR ACADEMIC Vol 3 No 2 (2016): J-SHMIC(Journal of English for Academic)
Publisher : UIR Press

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Abstract

The purpose of this study was to investigate the English language problems and learning strategies. The study employed a survey design which involved administering questionnaires of rating scales, using Rubin, J., & Thompson, I. (1994) and Rebecca Oxford (1990) Strategy Inventory for Language Learning (SILL), to measure English language problems and language learning strategies from 10 Thai students  of English Study Program of Teacher Training and Education Faculty at Riau Islamic University. The result of this study revealed that the most serious problem of Thai students in English Language Learning is listening and writing skills while reading skill is the least problem. Another big problem involved being unable to write an essay within limited time and always have a listening problem. Beside, the problem least mentioned is unable to understand classroom lectures in English. All Participant reported a high frequency use of strategy on the SILL. The participants reported using social strategies most frequently and metacognitive strategies least frequently but in medium range. The most frequently used strategies involved asking lecture or classmate for helping. Not trying guess if they do not fully understand what is being said was the least frequently used.  

STAD : A Suitable Technique for Increasing Students’ Vocabulary Mastery

JOURNAL OF ENGLISH FOR ACADEMIC Vol 4 No 1 (2017): J-SHMIC(Journal of English for Academic)
Publisher : UIR Press

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Abstract

Increasing students’ vocabulary mastery is not an easy way for English teacher in teaching English in the classroom. To realize the difficulties of increasing students’ vocabulary mastery, the English teacher should consider many strategies of teaching. The strategies that are used should be able to make students feel comfortable and enjoy in the classroom and also should be able to encourage and motivate them to learn. One of the strategies is STAD (Student Teams Achievement Divisions). This research focuses on the implementation of STAD to increase students’ vocabulary mastery. The writer would like to find out whether there is a suitable techniqueor not on students’ vocabulary mastery for junior high school students after applying STAD in teaching and learning process.This research is an experimental study in quantitative research. The research involved two equal qualification of sample groups, they are an experimental group and control group. The instrument that used in this research is vocabulary test.Pre-test were given for both groups, after applying STAD in treatment for experimental group, the pos-test was administered by the two groups, experimental group and control group. The writer found that the mean score of experimental group is 52.59 in pre-test and became 71.66 in post-test and control group is 51.52 in pre-test and became 55.81 in post-test. From the result of mean score from each groups, it can be seen that there is significant improvement from experimental group.Consequently, the useof STAD is more effective to increase vocabulary mastery for junior high school students. And the evidence indicates that teaching English vocabulary by using STAD has significant positive effectand become a suitable technique for increasing students’ vocabulary mastery.

EKSEKUSI TANAH TERHADAP PUTUSAN SERTA MERTA

Jurisprudentie Vol 3, No 1 (2016)
Publisher : Jurusan Ilmu Hukum Fakultas Syariah dan Hukum uin alauddin

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Abstract

Execution decision necessarily well often cause problems related to the rules that govern which SEMA and execution in the field. SEMA has set the terms of the petition immediately. However, in reality the obstacles in the form obscurity verdict, denial and resistance defendant execution, as well as objects related disputes are often encountered in the field. Therefore, the agencys execution necessarily need to be reviewed and rules related to implementation in order not to cause problems for the people and the courtKeywords: Execution, Decision NecesarilyEksekusi putusan serta merta sering menimbulkan masalah baik terkait aturan yang mengaturnya yaitu SEMA maupun pelaksanaan eksekusi di lapangan. SEMA telah mengatur syarat-syarat permohonan eksekusi serta-merta. Namun, dalam kenyataannya hambatan berupa ketidakjelasan amar putusan, penolakan dan perlawanan termohon eksekusi, maupun terkait objek sengketa sering ditemui di lapangan. Oleh karena itu, lembaga eksekusi serta-merta ini perlu ditinjau ulang terkait aturan dan pelaksanaannya agar tidak menimbulkan permasalahan bagi masyarakat dan pihak pengadilanKata Kunci : Eksekusi, Putusan Serta-Merta

ANALISIS KUALITAS PELAYANAN KOLEKSI KHUSUS DI PERPUSTAKAAN NASIONAL REPUBLIK INDONESIA BERDASARKAN METODE LIBQUAL+TM

Jurnal Ilmu Perpustakaan Vol 5, No 2 (2016): APRIL 2016
Publisher : Jurusan Ilmu Perpustakaan, Fakultas Ilmu Budaya, Universitas Diponegoro

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Abstract

Penelitian ini mengidentifikasi kualitas pelayanan koleksi khusus di Perpustakaan Nasional Republik Indonesia dengan menggunakan metode LibQual+TM. Perpustakaan Nasional Republik merupakan Lembaga Pemerintah Non-Kementerian yang melaksanakan tugas pemerintah dalam bidang perpustakaan yang berfungsi sebagai perpustakaan pembina dari semua perpustakaan yang berada di Negara Indonesia.  Layanan koleksi khusus ini terdiri dari layanan naskah kuno, layanan peta, layanan buku langka, layanan audio visual. Jenis penelitian menggunakan pendekatan kuantitatif deskriptif. Penelitian ini menggunakan metode LibQual+TM berdasarkan 3 dimensi yaitu Service Affet, Information of Control, Library as Place. Responden diminta untuk menilai harapan minimum, harapan sesungguhnya, dan persepsi terhadap 20 pertanyaan mengenai layanan koleksi khusus. Nilai kualitas layanan diperoleh dari selisih antara nilai harapan dan persepsi. Berdasarkan hasil penelitian, kualitas layanan koleksi khusus dinilai cukup puas oleh pemustaka dengan nilai persepsi 6,63, nilai harapan minimum sebesar 5,96, nilai harapan sesungguhnya sebesar 6,83 dengan nilai hasil AG sebesar 0,67 dan SG -0,2. Berdasarkan variabel variabel, nilai Service Affect pada skor persepsi mendapat angka 6,39, nilai harapan minimum sebesar 5,83, nilai harapan sesungguhnya (desired)  sebesar 6,73, dengan hasil AG sebesar 0,56 dan SG -0,34. Nilai Information of Control nilai persepsi mendapat skor 6,72, nilai harapan minimum sebesar 5,97, nilai harapan sesungguhnya (desired) sebesar 6,83, dengan hasil nilai AG sebesar 0,75 dan SG -0,11. Nilai library as Place merupakan dimensi yang mendapat nilai skor paling tinggi diantara dimensi-dimensi lainnya dengan mendapat skor persepsi 6,98 harapan minimum 1,15, harapan sesungguhnya (desired) 7,02, dengan hasil nilai AG sebesar 5,83 dan SG -0,04. Layanan yang mendapat nilai AG negative berada pada layanan peta dengan dimensi Information of Control. Aspek ini menunjukkan bahwa pemustaka menilai layanan peta belum mampu memenuhi harapan minimum pemustaka. 

Perbedaan Kadar Kalsium Dalam Saliva Sebelum Dan Sesudah Mengkonsumsi Minuman Ringan Ringan yang mengandung asam Bikarbonat

Journal of Dentomaxillofacial Science Vol 6, No 2 (2007): Formerly Jurnal Dentofasial ISSN 1412-8926
Publisher : DiscoverSys Inc

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Abstract

The increasing consumption of soft drink has developed anxiety inhealth extraordinary in population. Many studies have showed thenegative impacts of soft drink for human health. This study aimed toknow the difference of calcium and in saliva before and afterconsumed soft drink contained bicarbonate acid. The quasiexperiment prepation time series design was conducted at BTPTlaboratory in Maros of South Sulawesi by using 5 marmots inexamination with 600 grams or over body weigth average, and 70days of age or over. Data were analyzed using SPSS versi 11 forwindows withAnova, continued with LSD test. The are different ofcalcium in saliva level before and after consumtion of soft drink whichcontain acid bicarbonate in minute 5, 10, 15, and 20 treatment withp=0.000.

Department of Community Dentistry, Faculty of Dentistry Hasanuddin University Dentist Makassar, Indonesia

Journal of Dentomaxillofacial Science Vol 13, No 1 (2014): Formerly Jurnal Dentofasial ISSN 1412-8926
Publisher : DiscoverSys Inc

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Abstract

The main objective of caries prevention programs in the community is to reduce the number of colonies of cariogenicbacteria, especially Streptococcus. A method of caries preventionthat is currently developed is a method using probioticsthrough yogurt. This research is a laboratory based experiment using the cross over with control group design. Fifteensamples were collected randomly from a population of preclinical dentistry students of Hasanuddin University fromentry year 2008 until 2010. The results showed a significant difference between before and after drinking yogurt wherethe number of colonies of cariogenic bacteria in saliva reduced (p<0.05)and there is also a significant differencebetween the temperature of the yogurt in reducing the average number of cariogenic bacteria in the saliva after six andnine days yogurt consumption (p<0.05). In addition, there is a significant difference pH of saliva between before andafter drinking yoghurt (p <0.05). It is concluded that drinking yogurt reducts colony of cariogenic bacteria in youngadult saliva

Efek penyuluhan metode demonstrasi menyikat gigi terhadap penurunan indeks plak gigi pada murid sekolah dasar Effect of demonstration method counseling on brushing teeth to the decreasing of plaque value of elementary school students

Journal of Dentomaxillofacial Science Vol 11, No 2 (2012): Formerly Jurnal Dentofasial ISSN 1412-8926
Publisher : DiscoverSys Inc

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Abstract

Dental and oral health education to primary school children is one of the efforts to improve the health of the teeth inchildren for the preventive and promotive aspects. The choice of demonstration method on dental and oral healtheducation to support increasing understanding of the child, with doing practice the correct way to brush teeth. Thepurpose of this study was to compare the effectiveness of oral health education to decrease plaque index at sixth gradeelementary school students. This research is a quasi-field experimental design with pre and posttest with control group.Subjects consisted of all sixth grade students in the village Padang Loang, District Patampanua, Pinrang. With clusterrandom sampling got 49 students. Data were analyzed using t-test. The results showed that one week after illuminationwas applied value of plaque decline 2.269 at the treatment group. While the control group have increasing value ofplaque 0.485. The data indicate that there are effects of oral and dental health education demonstration method insixth grade elementary school students. It was concluded that the introduction of the importance of oral health as ahealth maintenance efforts should be done from an early ages, it needs good cooperation between students, teachersand parents.